Bobbin-braking mechnaism



July 1927' H. J. TYNAN BOBBIN BRAKING MECHANISM .Filed Sept. 2, 1924 iiiLlll 'llllrxrlwrllll.

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[NVENTOR ATTORNEY Patented July 19, 1927.

- U ITED J. TYNAH, RIDGEWOOD, NEWJEERSEY.

BOBIBIN-IBRAKING monulsm.

My. invention relates to apparatus for braking or checking the rotation of all the bobbins on a creel when the .t'hreadbeing drawni rom any .oueof the bobbins is broken.

. Apparatus in acoordance with inveib n may e m d se' in a r ty of ys in connection with machinery "in which strands aize drawn simultaneously from a plurality of reels, spools bobbins and the like, which are designated herein as thread working apparatus. For example, the invention iscapable of use 'with textile apparatus, such as doubling, spinning, twisting, warping and the like machines.

The braking vapparatu 0f the present inventionflis connected with the stop mechanism of-the nachine to which itisapplied; as, for example; the stop mechanism of the thread working textile Yrnachineywhich stop mechanism operates the usual wellsknown fashion and may be of any desired construction, The apparatus of the presentlinvention is operated from thestop mechanisin or a part connectedtbereto, so as to impart braking action to the individual "bobbins in niediately upon the coming into action of the stop mechanism which stops the feed of the apparatus, and serves to prevent entanglements of the threads with one another or with parts of the machine, which freqnently result, on existing rnaohi-neswhich do not have a braking 'niechanism such as I have devised and on whiohitlie bobbins are left free to turn aiter'the feeding device has been stopped by the stop mechanism. ll/[oreover my braking mechanism peigmits operation at a cinch higher rate of speed without such .difl'iculties as looping and entangling of the threads.

An important feature of "the present invention is the provision ofn eans for theappliation of substantially equalized braking pressure substantiallysimultaneously to all of the bobbins upon the creel. Other objects of the invention will be understood from the following description of an embodiment j V a I nected by parallel links 26, 26 to the creel I thereof.

In the. accompanying drawings Fig.1 is a front'view of a creel having bobbins thereon from which threads are drawn, and provided with braking ineans forth'e individual bobbins. Fig. 2 is a fragmentaryl'yiew simi- I a e i the off position. Fig. 3Zis' a section on thel line 3 3,"Fig. 2." F ig. .45 is a detail View of a modifications The creel illustrated herein comprises bar lar to Figjlybut showing the braking Inech- 10 supported 011 the nachinef frarhelnlem the creel frame when anyof the threads 15 happen to break; Said means serve for checking the rotation of the bobbins in order 'to prevent the threads which have not been broken flo ing from the bobbins If brakes were not applied to the individual bobb ns entanglement or the threads with one another and with the 'niachine parts would result from the bobbins rotating individuallyfa'nd with resulting difiiculties o P mrator;

Iteference character 18 designates a" rod connected to a movable part of the stop mechanism; which may be t any well known const i'uction and forthis reason need not be describedherein in detail. The stop mechanisniis sufch construction or theconnec- H 'tion therewith of such a form as to produce a' falling movement of rodl'8 whenthe device drawing thread a'parti'cular creel ceases to act, through the 0 igeon of the stolp motion immediately,related to .offl 1 9 'a ius blyse red i h collar 20, by eans of a set screw 22. When "the 'apparatus'is operating with all the threadsinta'ct; collar 20 .serves as a support for the brake actuatingbalr' 24; which is 'confraine bar 10. strand 28 of cord, ribbon, tape or the like is connected at or near its ends 30, 32 to theiespectiveends ofthebrake actuating'bar 2%. "One or moreot these 'coni posite ends with eyes 38.

nections may be adjustable, as, for example, one end may be attached by means of the adjustment screw The strand 28 serves to check or impart braking action to the bobbin. In the form shown, the strand 28 is in the term of a round cord and is passed over the hubs or projecting plugs 34 at the ends of the bbbbins. Other forms of bobbins and arrangement 01 strandsmay, of course,

i be resorted to so long as the strand can be made use qit to serve as a brake against rotation of the bobbins, either by application to the bobbin or to some part turning therewith. For example, I have shown in F ig. 5 the plugs or rollers 34 turning on the pins 12 and having studs adapted'to engage in holes provided in the heads of bobbins 14, which are shown in dotted lines in Fig. 5 to denote the disengaged position.

At intervals in the length of bar 24, and preferably midway between the bobbin pins 12, said bar 24 is provided with draw rods 36, which arefastened at one of their ends in the bar 24 and are provided at their op- The cord or strand 28 is passed through the eyes 88 of draw bars 36. A hand operated cam is provided on a convenient part of the apparatus, as, for example, on the frame member 11, and serves for manually operating the bar 24 when desired.

The operation of the apparatus described is as follows: Upon any one of the threads from bobbins 14 breaking, the bar 18 falls through the operation of the well known stop mechanism, of which it may form a part or to which it may be connected so as to partake of the movement thereof.

The falling of bar 18 permits the brake actuating bar 24 to move downwardly. Bar 24 being supported by the parallel links 26, 26, its downward movement results in a corresponding lateral movement in a direction to pull the cord 28, through the intermediation of draw rods 36, against the bobbins or the hubs thereof, thereby checking their rotation by a fully equalized braking pressure upon the respective bobbins, so that all the bobbins and the flow of thread therefrom are stopped substantially simultaneously and substantially at the same time that the stop mechanism of the machine comes into action to end the drawing off of the threads from the bobbins on the creel.

When the rod 18 is raised as by the operator after having tied the broken thread, the creel is restored to its normal operating position shown in Fig. 2, raising the bar 24 and releasing the braking cord 28 from its braking contact with the bobbins. Should the operator desire to free the bobbins from the action of braking cord 28, as, for example, in tying a thread, this may be done by turning the hand operated cam or eccentric 40, which will raise the bar 24 to some extent and permit any desired release of the braking action of the cord 28. The hand operated cam or eccentric 40 normally hangs free and out of contact with bar 24 when. the parts are in the running position shown in Fig. 2. If made use of by the operator while the bobbins are at rest as described, this cam 40 is again restored to its normally free position by raising the bar'24 on starting of the mechanism once more, which carries the bar 24 laterally away from the cam 40. When threads are not being drawn from all the bobbins, empty bobbins may be placed on the pins not in use or cord 28 may be adjusted to compensate for the missing bobbins, as will be readily understood.

It will be seen that the invention provides an equalized braking action for the indivirtual bobbins upon the creel and that same i may be readily, simply and cheaply con structed; is positive in its operation and elfectively prevents the tangling up of threads from bobbins continuing to rotate after the stop mechanism has come into action. The apparatus in accordance with my invention may be provided on creels of various kinds and on textile machinery and thread working apparatus of various kinds, the form illustrated being intended only for affording an understanding of the invention. Modifications and changes may be resorted to within the scope of my claims without departing from the principle of my invention or sacrificing its advantages.

I claim:

1. In thread working apparatus equipped with stop mechanism, a creel, a plurality of bobbins thereon from which threads are drawn, a single flexible braking member applied to all the bobbins in the series, and means coming into action upon operation of the stop mechanism for applying tension to the flexible braking member adjacent to each bobbin.

2. In thread working apparatus equipped with stop mechanism, a creel having a series of bobbins thereon from which thread is drawn, a flexible strand braking member for applying braking pressure to the bobbins, and means located at intervals in the length of the flexible strand for moving the flexible braking member against the bobbins.

3. In thread working apparatus equipped with stop mechanism, a creel, a plurality of bobbins thereon from which thread is drawn, a flexible braking member adjacent to the bobbins, and means for pulling the flexible braking member by its ends and also at intervals throughout its length into braking contact with the bobbins.

4. In thread working apparatus equipped with stop mechanism, a creel having a row of bobbin pins arranged substantially on a plane, bobbins on the pins and free to turn thereon, a bar having a plurality of link supports, whereby npon longitudinal permit it tomove downwardly and trans movement of the bar it is also moved trans versely, and means operated by the lateral versely with respect to the plane of the movement of said bar for braking the bob- 1 bobbin pins, means interconnected with the bins against turning.

" stop mechanism of the machine for nor- In testimony whereof, I have signed my maliy supporting said bar and adapted name hereto. when the stop acts to release said bar and HENRY J. TYNAN. 

